Choosing the correct vacuum pump for your application can be a difficult task. There are many different styles of pumps made and used for various processes and applications. Below you is a quick comparison chart of the pros and cons of various pump technologies.
For the reasons shown below, liquid ring pumps are the most frequently used pumps for many of the process applications that Wintek is involved in. It is rugged, can be sealed with the process solvents, and is relatively low maintenance.
|Vacuum Pump Type||Typical |
|Ability to Handle|
|Initial Capital Cost||Maintenance Frequency||Repair Difficulty|
|Liquid Ring Water or Solvent-Sealed||> 30 Torr*||High||Cooling Water||Medium||Low||Low|
|Liquid Ring Oil-Sealed||> 15 Torr*||High|
(Oil may get contamintated)
|Dry Screw||> 0.1 Torr||Low to Medium||Small Amount of Water and Purge Gas||High||Low||High|
|Oil-Lubricated Rotary Vane||1 - 150 Torr||Low||None||Low||High||Low|
|Rotary Piston||0.001 - 100 Torr||Medium||None||Low to Medium||Medium||High|
* Liquid Ring Operating Range can be extended down to 0.03 Torr with additional technology